SAT Math Multiple Choice Practice Question 420: Answer and Explanation

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Question: 420

3. A bakery uses a special flour mixture that contains corn, wheat, and rye in the ratio of 3:5:2. If a bag of the mixture contains 5 pounds of rye, how many pounds of wheat does it contain?

A. 2
B. 5
C. 7.5
D. 10
E. 12.5

Correct Answer: E


E According to the ratios given, you know that the mixture contains more wheat than rye; there must be more than 5 pounds of wheat. So let's eliminate A and B. Use the Ratio Box.

Because there is a total of 5 pounds of rye, the multiplier is 2.5. This allows you to solve for 12.5 pounds for the wheat.

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